EP3073801A1 - Dispositif chauffant formé d'un seul tenant - Google Patents

Dispositif chauffant formé d'un seul tenant Download PDF

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Publication number
EP3073801A1
EP3073801A1 EP15160982.3A EP15160982A EP3073801A1 EP 3073801 A1 EP3073801 A1 EP 3073801A1 EP 15160982 A EP15160982 A EP 15160982A EP 3073801 A1 EP3073801 A1 EP 3073801A1
Authority
EP
European Patent Office
Prior art keywords
conductive plate
ptc heating
electrically conductive
heating unit
integrally formed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15160982.3A
Other languages
German (de)
English (en)
Inventor
Chih-Chang Wei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Betacera Inc
Original Assignee
Betacera Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Betacera Inc filed Critical Betacera Inc
Priority to EP15160982.3A priority Critical patent/EP3073801A1/fr
Publication of EP3073801A1 publication Critical patent/EP3073801A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0452—Frame constructions
    • F24H3/0464—Two-piece frames, e.g. two-shell frames, also including frames as a central body with two covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/009—Heaters using conductive material in contact with opposing surfaces of the resistive element or resistive layer
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the present invention relates to a heater and, in particular, to an integrally formed heater.
  • a PTC (Positive Temperature Coefficient) resistor available in the market is self-heated with a rising temperature after applied with electricity. Then, the resistance value of the PTC resistor enters a transition zone, a certain temperature range, during which the temperature value increases sharply. Therefore, the PTC resistor is widely used in many products such as thermostatic heaters, household appliances, vehicle heating systems, and circuit protection devices.
  • the traditional heater comprises a PTC resistor, two electrode plates and two fin assemblies.
  • the two electrode plates are individually attached to two sides of the PTC resistor and provide current to heat the PTC resistor.
  • the two fin assemblies are individually attached to the two electrode plates to conduct the heat generated by the PTC resistor.
  • the electrode plates and the fin assemblies are attached to each other mostly by means of riveting or welding, which increases the manufacturing cost and the assembly process steps. Besides, if there is any defect in the riveting or welding area, the affected area is easy to break off, peel off or to cause an increase in impedance.
  • the present invention provides an integrally formed heater, which comprises a PTC heating unit, a first fin assembly, a second fin assembly, a first electrode plate, and a second electrode plate.
  • the first fin assembly is disposed on one side of the PTC heating unit.
  • the first fin assembly has a first electrically conductive plate attached to the PTC heating unit.
  • the second fin assembly is disposed on the other side of the PTC heating unit.
  • the second fin assembly has a second electrically conductive plate attached to the PTC heating unit.
  • the first electrode plate extends integrally from the first electrically conductive plate and is electrically connected to the PTC heating unit.
  • the second electrode plate extends integrally from the second electrically conductive plate and is electrically connected to the PTC heating unit.
  • the present invention also has the following effects.
  • the integrally formed heater of the present invention further comprises a plurality of ceramic devices and a thermally conductive adhesive, which prevents the integrally formed heater from current leakage and thus enhances the operation safety thereof.
  • the present invention provides an integrally formed heater 10, which comprises a PTC heating unit 1, a first fin assembly 2, a second fin assembly 3, a first electrode plate 4, and a second electrode plate 5.
  • the PTC heating unit 1 comprises a holder 11 and a plurality of PTC heating plates 12.
  • the holder 11 is provided with a plurality of slots 111.
  • the PTC heating plates 12 are individually received in the slots 111.
  • Each of the PTC heating plates 12 has an upper contact surface 121 and a lower contact surface 122 which are both exposed to the corresponding slot 111.
  • the first fin assembly 2 is disposed on one side of the PTC heating unit 1.
  • the first fin assembly 2 comprises a first electrically conductive plate 21, a first thermally conductive plate 22, and a first wavy fin 23.
  • the first electrically conductive plate 21 is attached to the PTC heating unit 1. That is, the upper contact surface 121 is attached to the first electrically conductive plate 21; the first wavy fin 23 is clamped firmly between the first electrically conductive plate 21 and the first thermally conductive plate 22.
  • the second fin assembly 3 is disposed on the other side of the PTC heating unit 1.
  • the second fin assembly 3 comprises a second electrically conductive plate 31, a second thermally conductive plate 32, and a second wavy fin 33.
  • the second electrically conductive plate 31 is attached to the PTC heating unit 1. That is, the lower contact surface 122 is attached to the second electrically conductive plate 31; the second wavy fin 33 is clamped firmly between the second electrically conductive plate 31 and the second thermally conductive plate 32.
  • the first electrode plate 4 extends integrally from the first electrically conductive plate 21 and is electrically connected to the PTC heating unit 1.
  • the detailed description is given below.
  • the first electrode plate 4 extends integrally from one end of the first electrically conductive plate 21 which is made of aluminum or copper.
  • the second electrode plate 5 extends integrally from the second electrically conductive plate 31 and is electrically connected to the PTC heating unit 1.
  • the further explanation is given below.
  • the second electrode plate 5 extends integrally from one end of the second electrically conductive plate 31 which is made of aluminum or copper.
  • the integrally formed heater 10 of the present invention further comprises a plurality of ceramic devices 6 and a thermally conductive adhesive 7.
  • Each of the ceramic devices 6 is attached to and covers an external wall 112 of the holder 11.
  • the thermally conductive adhesive 7 is applied between the external wall 112 and the ceramic devices 6.
  • the thermally conductive adhesive 7 comprises one of plastic, silicone, Teflon, polyamide, epoxy, ceramic powder, and a combination thereof.
  • the number of the ceramic devices 6 of the present invention is preferably three.
  • the three ceramic devices 6 are individually attached to three sides of the external wall 112, but not limited to this.
  • the assembly of the integrally formed heater 10 of the present invention is as follows:
  • the first fin assembly 2 is disposed on one side of the PTC heating unit 1.
  • the first fin assembly 2 has the first electrically conductive plate 21 which is attached to the PTC heating unit 1.
  • the second fin assembly 3 is disposed on the other side of the PTC heating unit 1.
  • the second fin assembly 3 has a second electrically conductive plate 31 which is attached to the PTC heating unit 1.
  • the first electrode plate 4 extends integrally from the first electrically conductive plate 21 and is electrically connected to the PTC heating unit 1.
  • the second electrode plate 5 extends integrally from the second electrically conductive plate 31 and is electrically connected to the PTC heating unit 1.
  • the first electrode plate 4 is formed integrally with the first fin assembly 2;
  • the second electrode plate 5 is formed integrally with the second fin assembly 3.
  • the integrally formed heater 10 has the features of low cost, simple assembly, reduced impedance, and stable structure.
  • FIGS. 1-5 which show the integrally formed heater 10 in an operating state. Because the first electrode plate 4 extends integrally from the first electrically conductive plate 21 and the second electrode plate 5 extends integrally from the second electrically conductive plate 31, the connection between the first electrode plate 4 and the first fin assembly 2 and the connection between the second electrode plate 5 and the second fin assembly 3 are both performed by integral forming, traditional replacing riveting or welding, which avoids the problems of poor bonding, increased impedance, high cost, and complex assembly such that the integrally formed heater 10 has the features of low cost, simple assembly, reduced impedance, and stable structure.
  • the integrally formed heater 10 of the present invention further comprises a plurality of ceramic devices 6 and a thermally conductive adhesive 7.
  • the ceramic devices 6 are individually attached to and cover the external wall 112 of the holder 11.
  • the thermally conductive adhesive 7 is applied between the external wall 112 and the ceramic devices 6. Because the ceramic devices 6 and the thermally conductive adhesive 7 have the properties of electrical insulation and thermal insulation, the ceramic devices 6 and the thermally conductive adhesive 7 can effectively confine the power supplies of the first electrode plate 4 and the second electrode plate 5 to the PTC heating plates 12. As a result, the current leakage in the integrally formed heater 10 can be prevented and thus the operation safety of the integrally formed heater 10 can be enhanced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
EP15160982.3A 2015-03-26 2015-03-26 Dispositif chauffant formé d'un seul tenant Withdrawn EP3073801A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15160982.3A EP3073801A1 (fr) 2015-03-26 2015-03-26 Dispositif chauffant formé d'un seul tenant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15160982.3A EP3073801A1 (fr) 2015-03-26 2015-03-26 Dispositif chauffant formé d'un seul tenant

Publications (1)

Publication Number Publication Date
EP3073801A1 true EP3073801A1 (fr) 2016-09-28

Family

ID=52997833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15160982.3A Withdrawn EP3073801A1 (fr) 2015-03-26 2015-03-26 Dispositif chauffant formé d'un seul tenant

Country Status (1)

Country Link
EP (1) EP3073801A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170055316A1 (en) * 2015-08-17 2017-02-23 Betacera Inc. Ceramic heater having enlarged windward area

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2023056A1 (fr) * 2007-07-30 2009-02-11 Chia-Hsiung Wu Procédé de liaison pour un chauffage d'air et structure de celui-ci
EP2190256A1 (fr) * 2008-11-20 2010-05-26 Behr France Rouffach SAS Caloporteur
EP2211589A1 (fr) * 2009-01-23 2010-07-28 Behr GmbH & Co. KG Caloporteur
EP2730854A1 (fr) * 2012-11-12 2014-05-14 Betacera Inc. Chauffage du compartiment intérieur de voiture

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2023056A1 (fr) * 2007-07-30 2009-02-11 Chia-Hsiung Wu Procédé de liaison pour un chauffage d'air et structure de celui-ci
EP2190256A1 (fr) * 2008-11-20 2010-05-26 Behr France Rouffach SAS Caloporteur
EP2211589A1 (fr) * 2009-01-23 2010-07-28 Behr GmbH & Co. KG Caloporteur
EP2730854A1 (fr) * 2012-11-12 2014-05-14 Betacera Inc. Chauffage du compartiment intérieur de voiture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170055316A1 (en) * 2015-08-17 2017-02-23 Betacera Inc. Ceramic heater having enlarged windward area
US10182470B2 (en) * 2015-08-17 2019-01-15 Betacera Inc. Ceramic heater having enlarged windward area

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